88 ELEMENTARY WOODWORKING 
Compare the leaf of the buckeye and the hickory 
shown in Fig.99. Both leaves are compound, and each 
has five leaflets, but they are quite different, because the 
hickory leaflets are arranged on opposite sides of the leaf- 
stalk instead of radiating from one point. 
There are several varieties of hickory, including the 
shagbark, or shellbark, the pignut, and pecan. 
The name shagbark hickory is taken from the peculiar 
appearance of the bark, which hangs in loose pieces 
nearly a foot long and gives the tree a very shaggy 
effect. Shellbark is another common name for this tree. 
The nut which this tree bears is hard and thick, but 
the kernel is very sweet, and is considered by some 
superior to all other hickory nuts. - 
The pignut hickory is so called because the nuts in 
some parts of the country are used to feed the pigs. It 
is also called broom hickory. The nuts are small and 
become bitter after having lain awhile. The wood, 
however, like all the hickories, is valuable, being hard 
and tough. There is a difference between strength and 
toughness. Oak is strong, but not tough. Hickory is 
both hard and tough. A tough wood is one which will 
stand bending without breaking. A wood which will 
bend easily but is not strong cannot be called tough. 
It must be both strong and elastic, and hickory has 
both of these qualities. 
